Optimization of the energy characteristics of a step-down converter based on a buck converter

In this work, we analyze the energy characteristics of a step-down DC-DC converter based on a buck converter. Criteria are developed for achieving the maximum efficiency. In addition, the dynamic and static processes of semiconductor components in a converter are considered. Optimization of energy characteristics is achieved by mutual coordination of the following parameters: the operational frequency of semiconductor elements, their operating and average currents; input and output voltages; the load power and the inductance of the filter inductor. The numerical solutions of differential equations describing the processes occurring in the buck converter are used to propose convenient formulas for calculating the optimal mode of its operation in static mode.

Authors: I. Yu. Abdulkhakov, K. M. Sargsyan, A. V. Bulovich, L. A. Soboleva

Direction: Electrical Engineering

Keywords: buck converter, optimum energy efficiency, output power

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